Fifik Zulfikar, author
Universitas Indonesia, 2011
UI - Skripsi (Open)
Lemert, Edwin M.
Prentice-Hall, 1967
Buku Teks
Sullivan, Thomas J., 1944-, author
Macmillan, 1988
Buku Teks
Mazur, Allan, author
Prentice-Hall, 1991
Buku Teks
Chapman, J.D., author
Longman Scientific & Technical, 1989
Buku Teks